I purchase a rear axle off a 2004 dodge ram which has disc brakes. If I swap that o to my 1985 dodge ram d 150 what all will I have to change. Will I need to replace the porpotion valve. I heard wilwood ha e a adjustable one. It there any other items need to be replace. Second question is that do dodge have a 5spd trans that will bolt onto a 5.9 small block or just get a 727 and use a gear ration of 323. Will that help my hwy miles.